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Enable USB input path (from mics)

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This commit is contained in:
Ed Clarke
2018-10-31 14:10:28 +00:00
parent c0d80b665a
commit 239f9b9cb7
4 changed files with 24 additions and 20 deletions
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10
examples/xua_lite_example/src/app_xua_lite.xc
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@@ -96,24 +96,22 @@ int main()
i2s_frame_master(i_i2s, p_i2s_dac, 1, p_i2s_adc, 1, p_bclk, p_lrclk, p_mclk_in, clk_audio_bclk);
[[distribute]]AudioHub(i_i2s, c_audio, c_ds_output);
pdm_mic(c_ds_output[0], p_pdm_mics);
}
}
on tile[1]:{
// Connect master-clock clock-block to clock-block pin
// Connect master-clock input clock-block to clock-block pin
set_clock_src(clk_usb_mclk, p_mclk_in_usb); // Clock clock-block from mclk pin
set_port_clock(p_for_mclk_count, clk_usb_mclk); // Clock the "count" port from the clock block
start_clock(clk_usb_mclk); // Set the clock off running
//Setup DAC over i2c and then return so we do not use a thread
c_audio :> int _; //Wait for reset asserted from other tile to complete
c_audio :> int _; //Wait for reset to be asserted/deasserted by other tile
par{
i2c_master(i_i2c, 1, p_scl, p_sda, 100);
AudioHwConfigure(DEFAULT_FREQ, i_i2c[0]);
}
c_audio <: 0; //Signal to tile[0] that clock is good
c_audio <: 0; //Signal to tile[0] that mclk is now good
debug_printf("XUD SPEED: %d\n", (AUDIO_CLASS == 1) ? XUD_SPEED_FS : XUD_SPEED_HS); //FS = 1, HS = 2
par{
// Low level USB device layer core
XUD_Main(c_ep_out, 2, c_ep_in, 3,
@@ -121,7 +119,7 @@ int main()
null, null, -1 ,
(AUDIO_CLASS == 1) ? XUD_SPEED_FS : XUD_SPEED_HS, XUD_PWR_BUS);
// Buffering cores - handles audio and control data to/from EP's and gives/gets data to/from the audio I/O core
// Buffering core - handles audio and control data to/from EP's and gives/gets data to/from the audio I/O core
XUA_Buffer_lite(c_ep_out[0], c_ep_in[0], c_ep_out[1], c_ep_in[1], c_ep_in[2], c_sof, p_for_mclk_count, c_audio);
}
}//Tile[1] par

10
examples/xua_lite_example/src/audio_hub.xc
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@@ -34,7 +34,7 @@ void AudioHub(server i2s_frame_callback_if i2s,
#if XUA_NUM_PDM_MICS > 0
unsigned buffer;
int output[XUA_NUM_PDM_MICS] = {0};
int raw_mics[XUA_NUM_PDM_MICS] = {0};
const unsigned decimatorCount = 1; // Supports up to 4 mics
mic_array_decimator_conf_common_t dcc;
int * unsafe fir_coefs[7];
@@ -68,15 +68,15 @@ void AudioHub(server i2s_frame_callback_if i2s,
case i2s.restart_check() -> i2s_restart_t restart:
restart = I2S_NO_RESTART; // Keep on looping
timer tmr; int t0, t1; tmr :> t0;
// for (int i = 0; i < NUM_USB_CHAN_OUT; i++) c_audio :> samples_out[i];
// for (int i = 0; i < NUM_USB_CHAN_IN; i++) c_audio <: samples_in[i];
for (int i = 0; i < NUM_USB_CHAN_OUT; i++) c_audio :> samples_out[i];
for (int i = 0; i < NUM_USB_CHAN_IN; i++) c_audio <: raw_mics[i];
//tmr :> t1; debug_printf("%d\n", t1 - t0);
//delay_microseconds(15); //Test backpressure tolerance
current = mic_array_get_next_time_domain_frame(c_ds_output, decimatorCount, buffer, mic_audio_frame, dc);
unsafe {
samples_out[0] = current->data[0][0];
samples_out[1] = current->data[1][0];
raw_mics[0] = current->data[0][0];
raw_mics[1] = current->data[1][0];
}
break;
}

2
examples/xua_lite_example/src/pdm_mic.xc
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@@ -64,7 +64,7 @@ void mic_array_decimator_set_samprate(const unsigned samplerate, int fir_gain_co
void pdm_mic(streaming chanend c_ds_output, in buffered port:32 p_pdm_mics)
{
streaming chan c_4x_pdm_mic_0;
assert((MCLK_48 / 3072000) == (MCLK_441 / 2822400));
assert((MCLK_48 / 3072000) == (MCLK_441 / 2822400)); //Make sure mic clock is achievable from MCLK
par
{
mic_array_pdm_rx(p_pdm_mics, c_4x_pdm_mic_0, null);

22
examples/xua_lite_example/src/xua_buffer_lite.xc
View File

@@ -195,9 +195,8 @@ void XUA_Buffer_lite(chanend c_ep0_out, chanend c_ep0_in, chanend c_aud_out, cha
unsigned num_samples_received_from_host = 0;
unsigned num_samples_to_send_to_host = 0;
int loopback_samples[MAX_OUT_SAMPLES_PER_SOF_PERIOD] = {0};
int32_t samples_out[NUM_USB_CHAN_OUT] = {0};
int32_t samples_in[NUM_USB_CHAN_IN] = {0};
int samples_out[NUM_USB_CHAN_OUT] = {0};
int samples_in[NUM_USB_CHAN_IN] = {0};
#define c_audioControl null
#define dfuInterface null
@@ -221,9 +220,13 @@ void XUA_Buffer_lite(chanend c_ep0_out, chanend c_ep0_in, chanend c_aud_out, cha
//Unsafe to allow us to use fifo API
unsafe{
//FIFOs from EP buffers to audio
int host_to_device_fifo_storage[MAX_OUT_SAMPLES_PER_SOF_PERIOD * 2];
int device_to_host_fifo_storage[MAX_IN_SAMPLES_PER_SOF_PERIOD * 2];
mem_fifo_t host_to_device_fifo = {sizeof(host_to_device_fifo_storage)/sizeof(host_to_device_fifo_storage[0]), host_to_device_fifo_storage, 0, 0};
mem_fifo_t device_to_host_fifo = {sizeof(device_to_host_fifo_storage)/sizeof(device_to_host_fifo_storage[0]), device_to_host_fifo_storage, 0, 0};
volatile mem_fifo_t * unsafe host_to_device_fifo_ptr = &host_to_device_fifo;
volatile mem_fifo_t * unsafe device_to_host_fifo_ptr = &device_to_host_fifo;
//XUD transaction variables passed in by reference
XUD_Result_t result;
@@ -266,7 +269,7 @@ void XUA_Buffer_lite(chanend c_ep0_out, chanend c_ep0_in, chanend c_aud_out, cha
//fifo_ret_t ret = fifo_block_push(host_to_device_fifo_ptr, loopback_samples, num_samples_received_from_host);
fifo_ret_t ret = fifo_block_push_short_pairs(host_to_device_fifo_ptr, (short *)buffer_aud_out, num_samples_received_from_host);
if (ret != FIFO_SUCCESS) debug_printf("h2f full\n");
if (ret != FIFO_SUCCESS) debug_printf("h2d full\n");
num_samples_to_send_to_host = num_samples_received_from_host;
//Mark EP as ready for next frame from host
@@ -289,8 +292,11 @@ void XUA_Buffer_lite(chanend c_ep0_out, chanend c_ep0_in, chanend c_aud_out, cha
case XUD_SetData_Select(c_aud_in, ep_aud_in, result):
timer tmr; int t0, t1; tmr :> t0;
fifo_ret_t ret = fifo_block_pop_short_pairs(device_to_host_fifo_ptr, (short *)buffer_aud_in, num_samples_received_from_host);
if (ret != FIFO_SUCCESS) debug_printf("d2h empty\n");
//Populate the input buffer ready for the next read
pack_samples_to_buff(loopback_samples, num_samples_to_send_to_host, in_subslot_size, buffer_aud_in);
//pack_samples_to_buff(loopback_samples, num_samples_to_send_to_host, in_subslot_size, buffer_aud_in);
//Use the number of samples we received last time so we are always balanced (assumes same in/out count)
unsigned input_buffer_size = num_samples_to_send_to_host * in_subslot_size;
@@ -307,11 +313,11 @@ void XUA_Buffer_lite(chanend c_ep0_out, chanend c_ep0_in, chanend c_aud_out, cha
for (int i = 1; i < NUM_USB_CHAN_IN; i++){
c_audio_hub :> samples_in[i];
}
int out_samps[NUM_USB_CHAN_OUT];
fifo_ret_t ret = fifo_block_pop(host_to_device_fifo_ptr, out_samps, NUM_USB_CHAN_OUT);
fifo_ret_t ret = fifo_block_pop(host_to_device_fifo_ptr, samples_out, NUM_USB_CHAN_OUT);
//if (ret != FIFO_SUCCESS) debug_printf("empty\n");
for (int i = 0; i < NUM_USB_CHAN_OUT; i++) c_audio_hub <: out_samps[i];
for (int i = 0; i < NUM_USB_CHAN_OUT; i++) c_audio_hub <: samples_out[i];
tmr :> t1; debug_printf("a%d\n", t1 - t0);
ret = fifo_block_push(device_to_host_fifo_ptr, samples_in, NUM_USB_CHAN_IN);
break;
}